function jsonp({url, params = {}, jsonp, success}) {
	// 创建函数的名字
	const fnName = "zquery" + Math.random().toString(36).slice(2);
	if(jsonp)
		params[jsonp] = fnName;// {prod:"pc",wd:xxx,cb:xxxxxx};
	const querystr = Object.keys(params).map(key=>key+"="+params[key]).join("&");
	if(querystr){
		url+="?"+querystr;
	};
	window[fnName] = success;
	const script = document.createElement("script");
	script.src = url;
	script.onload = function(){
		document.body.removeChild(script);
		delete window[fnName];
	};
	document.body.appendChild(script);
}